Ben Affleck Painfully Relives Days as a Child Actor on 'Voyage of the Mimi' -- Watch!

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Before Ben Affleck was an Oscar-winning filmmaker, he was just a young kid trying to educate the masses.

The 44-year-old actor makes an appearance on next week's episode of The Graham Norton Show, where he's forced to relive his painful -- and hilarious -- past as host of PBS' educational television series The Voyage of the Mimi.

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"Much like my character in [The Accountant], I had some training in my early life, but this kind of training was training in making sixth grade math and science students suffer through belabored explanation of math and science concepts on a child's TV show," Affleck explained of his childhood role.

"I did it over a period of time," he said of the 13-episode series that aired in the '80s. "There's some where I'm 10, and some where I'm 13."

Watch the hilarious clip below:

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"You just look really relaxed. Those jeans said 'hands in pockets,'" Norton joked of Affleck's introduction.

"You know when you get a laugh just on saying 'I'm Ben Affleck,'" the actor laughed. "I was a very gangly young man who came to England, and it was a documentary I think about Greenwich Mean Time, and I had never been to England before. I was really excited about the time difference. It was a big thrill."

"It was totally beyond me. I had no idea," he confessed of his understanding of the show's concepts. "They worked me to the bone, so I was half asleep all the time, and they'd get to my reaction shots at the end of the day…"

"You do seem a little unengaged," Norton agreed, before playing a hilarious montage of Affleck's "listening faces."

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ET got Affleck's reaction to his childhood gig at the Accountant junket in September, where he revealed that his own kids -- 10-year-old Violet, 7-year-old Seraphina, and 4-year-old Samuel -- are "so not interested."

But according to Affleck, his kids' disinterest in his childhood career is just how he likes it, as he doesn't want "them to get any ideas" and start acting themselves.

See more in the video below.